Abstract：
:Due to the increasing frequency and severity of the coral bleaching events in the context of global warming, there is an urgent need to improve our understanding of the susceptibility of corals to thermal stresses, particularly at the sub-cellular level. In this context, we examined the modulation of the polyp mitochondrial Hsp60 in three scleractinian coral species (Seriatopora hystrix, Montipora monasteriata and Acropora echinata) under simulated heat shock bleaching at 34 °C during a time course of 36 h. All three species displayed a similar initial increase of Hsp60 level which accompanies the increasing paleness of coral tissue. Afterwards, each of them showed a specific pattern of Hsp60 down-regulation which can be indicative of a different threshold of resistance, although it proceeded in synchrony with the complete bleaching of tissues. The finely branched S. hystrix was the species most susceptible to heat stress while the plating M. monasteriata was the most tolerant one, as its Hsp60 down-regulation was less rapid than the branching corals. On the whole, the Hsp60 modulation appears useful for providing information about the susceptibility of the different coral taxa to environmental disturbances.
journal_name
Mar Environ Resjournal_title
Marine environmental researchauthors
Seveso D,Montano S,Strona G,Orlandi I,Galli P,Vai Mdoi
10.1016/j.marenvres.2014.06.008subject
Has Abstractpub_date
2014-08-01 00:00:00pages
69-75eissn
0141-1136issn
1879-0291pii
S0141-1136(14)00115-9journal_volume
99pub_type
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